Report: Hugh Hefner's cause of death revealed

Hugh Hefner's cause of death has been revealed. Page Six and TMZ report, citing his own death certificate, that Hefner died from cardiac arrest and respiratory failure. More specifically, the Playboy founder had been battling E. coli and septicemia (blood poisoning) for six days prior to his passing on Sept. 27. Hefner was laid to rest in a private memorial Saturday.